CLAUSE CODE: QC11-N    This clause was archived as of 01/07/2016
  CLAUSE TITLE: High Strength Fastener Requirements


QC11-N HIGH-STRENGTH FASTENER REQUIREMENTS [NASA AQC30]:

 

Contractor shall include with each shipment a legible copy of the Material Test Report. The report shall include the following information:

a.       Name and address of the manufacturer.

b.       Part number and the ordering and procurement specification, including revision levels that controlled the manufacture of the goods.

c.        Manufacturer's production order/lot number.

d.       A copy of the Raw Material Certificate from the original manufacturer.

e.       Raw material data:

1.       Material specification.

2.       Alloy class, type, or grade.

3.       Raw material heat lot, lot, or melt number.

4.       Name of raw material producer.

f.         Chemical analysis report.

g.       Mechanical test report as defined by the applicable specification (i.e., tensile and/or single/double shear strength, fatigue testing).

h.       Metallurgical examination report as defined by the applicable specification (e.g., microstructure and/or macrostructure).

i.         NDT test results: dye penetrate or magnetic particle results, when required by applicable specification.

j.         Dimensional inspection results.

If Contractor is not the manufacturer, Contractor's name and JPL's Contract/Purchase Order number will be referenced on the manufacturer's certificate. Any other distributors, which have had control of the parts, must be included

Contractor’s Quality Assurance department shall be responsible for ensuring that items per this Contract/Purchase Order are packaged in such a manner that the dimensional integrity is preserved, contamination and corrosion are prevented, and physical damage to the threads is avoided during shipment. The preferred method, when size permits (usually #10 and MJ5 and larger), will be to individually sleeve the threaded portion of the fastener. Any method used shall ensure that threads remain undamaged during shipment.

Fasteners made of plain carbon or low alloy steel shall be protected from corrosion. When plating is specified, it shall be compatible with the space environment (as appropriate). On steels harder than RC 33 plating shall be applied by a process that is not embrittling to the steel.

For flight applications, Flight Fastener Materials must have high resistance to Stress Corrosion Cracking (SCC). The allowed materials are A286, MP35N, Inconel 718, or TI-6Al-4V. For structural fasteners, the minimum required tensile strength is 160 ksi (1100 MPa). The preferred plating material is silver. Cadmium and zinc plating is prohibited.